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Nikon F4 is a 35mm film Integral-motor SLR system camera made by Nikon between 1988-97.

The Nikon F4 was the third improved version of the original Nikon F which was introduced in 1959. It was replaced in 1996 by the Nikon F5. Some twenty years after its introduction it was still considered by many to be one of the most capable, tough and ergonomically brilliant professional 35mm SLR camera ever made. It is the last Nikon to accept the early Nikon F lenses without modification. This feature is a small steel tab on the aperture-coupling ring just behind the lens mount that can be folded away, released by pushing a chromed button next to it. Forgetting to engage the aperture coupling will either cause an "A" or an "FEE" indication in the finder using AI- and AF lenses, unless in manual mode.

The F4 operates with any lens ever made for the F-mount within the functional limitations associated with the lens put on the camera. The auto-focus works as focus-assist on most manual lenses at full aperture. Using pre-AI lenses, the stop down metering will apply. AI lenses may be used in Aperture-priority automatic exposure mode, while AF lenses can be used in Shutter-priority and Program-modes as well.

The F4 is larger and heavier than it predecessors, and is closely integrated with its accessories, especially its range of finders, backs and battery packs, to better adapt it to the task at hand. It weighs 1,5 kilogram (3.3 lbs) in its basic form ready to shoot with a standard F1.4 lens, while changing to MB21 adds 0.2 kilogram (0.44 lbs). The F4 is almost completely battery dependent, only film rewind may be performed manually, but it uses the universally available standard AA batteries, which should be fresh for trouble-free operation using the MB-20.

Multiple exposure: Via a lever on the right back side of the top plate; setting: 1. Pull the multiple exposure lever toward you and release the shutter. The film will not advance. Multiple exposure lever is automatically reset to the original position. 2. Depress the shutter release button again to take the second shot. Film will advance to the next frame. For more than two shots on the same frame, pull the lever before each additional exposure.

Reflex mirror: Automatic instant-return type with lockup facility; to lock the reflex viewing mirror in the "up" position, push in the depth-of-field preview button and rotate the mirror lockup lever counterclockwise until it stops. (In this case, exposure meter cannot be used.)

This means that you can not operate the camera in any auto exposure and/or autofocus mode anymore (even if the viewfinder LCD may indicate information). Any indication of light by the LCD is a result of spurious light entering through the view finder eyepiece. However, you can make use of the camera's suggested metering and use it in Manual mode.

Shutter release: Electromagnetic shutter by magnet trigger, on the top plate

Alternate shutter release button: there is a shutter release button is provided at the bottom of the High Speed Battery Pack MB-21 as well as the Multiple Power High Speed Power Pack MB-23. This is convenient for vertical format shooting. The button can be locked to prevent inadvertent shutter release. Note: all F4 has another release terminal at the bottom rear section.

Shutter speeds: Lithium niobate oscillator-controlled; controlled from 1/8800 to 30 sec. steplessly in PH, P or A mode; set from 1/8800 to 4 sec. in one EV steps in M or S mode; B, T and X (1/250)

Viewfinder illuminator switch: When it's dark, use the viewfinder illuminator to light up all viewfinder information. Turn the switch on, and lightly press the shutter release button to illuminate the display. The illuminator automatically switches off as the viewfinder display disappears; it also momentarily switches off during exposure. Beneath the shutter speeds dial

Film speed range: ISO 25 to 5000 for DX-coded film; ISO 6 to 6400 in 1/3 EV steps for manual setting Film speed setting: At DX position, automatically set to ISO speed of DX-coded film used; manual override possible

Film loading: Film automatically advances to first frame when shutter release button is depressed once

Auto film loading: The user simply pulls the film leader to the mark closes the camera back then presses the shutter release button - and the camera automatically advances the film to frame #1.A bright LED will lit and stays on for approx. 16 sec. in such case, the film advance operation will halt as well.

Frame counter: Two additive types provided - on top of camera and inside viewfinder (LCD)

Re-winding: Choice of automatic or manual; automatically rewinds when film rewind levers (R1) and (R2) are used; takes approx. 8 sec. per 36-exposure roll (with six AA-type batteries); (with six AA-type batteries); stops automatically when film is rewound; manual rewind when R1 lever is used

Flash sync:1/60-1/250 in PH, P or A mode; in M or S mode, shutter fires at speed set and when set from 1/250 to 1/8800 sec., shutter is automatically set to 1/250; down to 30 sec. shutter is available by using SB-24, SB-26 or other equivalent Nikon speedlights etc. in rear curtain sync in PH, P or A mode Flash ready-light: Viewfinder LED lights up when Nikon dedicated Speedlight is ready to fire; blinks to warn of poor camera/ Speedlight connection or insufficient light for correct exposure

Flash PC socket: A separate sync terminal is provided on the Nikon F4. Use this terminal to attach flash units which do not have the standard ISO hot shoe.

The F4 camera body was available in three configurations, differentiated by choice of battery pack. These can easily be changed at any time. The battery pack determines number of batteries in use, film drive speed, and the grip combination:

F4P (Press) is a very rare F4S with two additional speeds on the selector : 1/350 & 1/750

F4E includes the MB-23 battery pack. It holds 6 × AA batteries, but it can also use the high-capacity MN-20 battery pack. The vertical grip/shutter release is bulkier than the MB-21. 5.7fps film advance.

There are two camera Data backs for the Nikon F4 with additional functions, as well as a 250 frame bulk film magazine:

MF-22 Data Back for imprinting day of the year or time of the day on the film in the lower right corner of the picture.

MF-23 Multi Control Back imprints by choice date, time, frame number, a consecutive serial number, job number or exposure information; either within the frame or between them. The MF-23 also works as an interval timer when specifying starting time, interval and number of frames to expose, and as an exposure delayed start with a specified number of exposures, as well as long time exposure up to 999 hours, minutes or seconds. Auto bracketing taking up to 19 differently exposed frames. A special function triggers the shutter when an object appears in focus as pre-selected.

MF-24 250 frames bulk film magazine provides the same Multi Control functions as the MF-23. It is used in connection with two bulk film cassettes MZ-1 for up to 10 meters of 35mm film.